Photographic-printing apparatus.



N. J. GOLDFARB.

PHOTOGRAPHIG PRINTING APPARATUS.

APBLIGATION rum) JULY 25,1913.

1, 1 08,744. Patented Aug. 25, 191

2 BHEETSSHEET 1.

THE NORRIS PETERS CON PHUTOJJTHOH WASHINGTON. D, (I.

N. J. GOLDFARB. PHOTOGRAPHIO PRINTING APPARATUS.

APPLICATION FILED JULY 25 1913 1 1 ()8 744, Patented Aug. 25, 191 2 2 SHEETS-SHEET 2.

THE NORRIS PETERS CO., PHOTO-LITHO. WASHINGTON. D. C.

i] N ITED STATES PATENT OFFICE.

NATHAN J. GOLDFARB, OF NEW YORK, N. Y., ASSIGNOR 0F ONE-HALF TO PHILIP RABINOWITZ, OF BROOKLYN, NEW YORK.

PHOTOGRAPHIC-PRIN TIN G APPARATUS.

Specification of Letters Patent.

Patented Aug. 25, 1914.

Application filed July 25, 1913. Serial No. 781,091.

T 0 all whom it may concern:

Be it known that I, NATHAN J. GOLDFARB, a citizen of the United States, residing in New York. borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Photographic-Printing Apparatus, of which the following is a specification.

This invention relates to photographic printing apparatus of the pivoted or swivel type adapted to be rotated toward and from a source of light by which the printing is effected.

The object of the'invention is to provide a simple and reliable device of this kind, by which the light is automatically turned on and off at the proper times, and the frame automatically opened when turned away fromthe light after exposure. These objects are attained by proper arrangement of electric switch devices, and by mechanical releasing means in connection with springs which throw open the back of the frame. The frame is arranged relatively to the light so that the operator is permitted by passing the hand between the frame and the light to hold back the printing of parts of the negative as desired, after the practice of photographers when printing in the usual manner with unmounted printing frames.

In the accompanying drawings, Figure 1 is a perspective view of a device embodying the invention, shown in open position preparatory to receiving a negative and paper for printing, Fig. 2 is a similar perspective showing the frame with its back closed and the parts in position ready for turning the frame int-o printing position, Fig. 3 is a perspective view showing the device in printing 'position, Fig. 4 is a vertical section on a larger scale on line 4-4, Fig. 2, Fig. 5 is a side view of one of the framestandards with parts in section, on line 55, Fig. 6 Fig. 6 is a top-view of the frame standard shown in Fig. 5, also showing the cooperating parts on the printing-frame, Fig. 7 is a vertical section on line 7-7, Fig. 2, and Fig. 8 is a top-view of the other end of the frame, and standard, from those shown in Fig. 6.

Similar reference numerals indicate corresponding parts in all the figures.

The base 70 of the device supports two upright standards 29, 30, of wood or other suitable material, between which the frame 7 is supported on trunnions 28, 32, one at each end of the frame so that the latter is capable of oscillation on its longitudinal axis between the standards.

Between the frame 7 and standard 29 is supported on trunnion 28 a coil-spring 72. one end of which is secured to the standard and the other to the frame. Said spring tends to turn the printing-frame 7 in direction of the arrow 35, Fig. 3. Movement of the frame in said direction is limited by means of an abutment-pin 22 projecting longitudinally from the end-bar of the printing-frame in such position as to engage the top of the standard and arrest the frame when the latter arrives in discharging position as shown in Figs. 1 and 2. A frictionbrake 23 is arranged on the standard 29, said brake comprising a piece of springmetal extending eccentrically, its upper end outside of the path of the pin 22, and its lower end provided with a seat 71. for the pin in such position as to receive and frictionally engage the pin when the pin approaches the standard. The frame is thus cushioned and retarded in its return movement, so as to avoid shocks, and is, by the pin and socket, retained in position against the ordinary shocks of discharge and refill- 1n".

The back of the printing-frame comprises two leaves, 26, 27, one of which, 27, is hinged tothe end-rail of the frame at the end adjacent the standard 30, and the other of which is hinged to the leaf 27. A spring 15 is employed in connection with the hinge 14 between the leaves, which spring has a tend ency'to open the leaf 26 from the frame 7. The power of the spring is such that when the leaf 26 is released, the spring will not only open said leaf away from the frame, but the momentum will assist in opening the other leaf. 27, which is also provided at its hinge 73 with a spring 16. The combined action of the two springs is sufiicient to completely open the back of the frame from closed position to discharging position shown in Fig. 1. in which the back is supported by a rest 10 secured to and projecting above the top of the standard 30.

The discharging position of the printingframe,..in which it is limited by its abutment-pi'n 22, is a forwardly-inclined position, as shown in the figures, thus enabling the operator who stands in front of the frame to see at substantially right-angles to his line of vision the entire interior of the printing-frame and any negative 14 or paper 79 therein. The rest 10 has its up er edge likewise inclined, whereby the bae'l: of the frame is supported on a line trans,- versely of the same. The upper end of the rest 10 is-provided with acushion 1, which is in line with the hinge 1& when the back is swung open, so that the shocks of arresting the opening movement of the back are ta en up .by said cushion, andthe hinge 14L formsia .shield abutting therewith and avoiding injury to the leaves 26 and 27.

Motion of .the printingframe in direction toward-printingposition is limited, in case the frame .be-moved sufliciently far, by abut ment. of the pin 22'against the front-portion of the .standard29. It is only necessary, however, to oscillatethe frame by 'hand or by foot-operated mechanism hereinafter described, to a pointslightly beyondprinting position, in order to :permit operation of a pawl 20 which-arrests the frame in exact sition suitablefor sprinting. Said pawl 1s pivoted-on a horizontal axis by any suitable "means to the standard 30 below the axis'of the printing frame, and extends upwardlyat the inside of the standard in such position as when 'advancedto come beneath the rear portion of the frame as shown in dotted lines in .Fig. 8. A handle 18 at the other end of the pawl serves for its manual operation. A spring 13 on the horizontal portion of the pawl normally actuates it into the .path of the printing-frame. XVhcn, therefore, theframe is turned in the direction of the arrow in Fig. 2, from dischargingz-intoprinting position, the frame moves the pawl 20 laterally, and when past the sameithe pawl springs into place, and upon the frame now being released, spring 72 returns the frame into contact with the nose of thepawl, where it remainsat rest during printing.

Vhen the'printing operation is finished, pressure on the handle 18 moves the pawl out of the path of the frame, which then is oscillated by its spring in the direction of arrow 35, Fig. 3, into discharging position.

The lamp for printing may comprise a suitable incandescent electric lamp 6, supported at proper distance above the frame 7 by a flexible arm 3, whereby the lamp may be exactly positioned for the best angle relatively to the frame, also its distance there from changed by suitable bending of the arm, as required. The arm is secured to the base by any suitable means.

Between-the standards 29, 30, and below the frame 7 is supported on the base 70 a ruby or other suitable lamp 5 not affecting the photographic paper, and providing sufficient light for use during the operations of removing the printed sheet from the frame and inserting a fresh sheet for printing.

The automatic turning of the current through the lamps 5 and 6 is effected by contacts 1, 2, on the standard 29, and a cooperating-contactbt) on the frame 7, said contacts being suitably connected by wires 7 4, 75, 76, with the lamps and with a source of electricity. When the frame swings from discharging to printing position it moves contact 60 away from contact 2 and intoengagement with contact 1, and thus switches the current from lamp 5 to lamp 6, for printing. W'hen swung in'reverse direction, the current is switched from .lamp 6 ,to lamp 5.

The automatic opening of the back of the frame when the frame arrives in discharging-position, after printing, is permitted by means of a releaserdevice comprising a latch-plate 9 pivoted to the printing-frame 7 and having its portion, adjacent the leaf 26, normally in the path of a latch 12 by which the back 26, 27 of the frame is secured closed. The latch 12 consists of a metal spring fastened at one end-to-the leaf 26, and projecting at its other end upwardly from the leaf and beyond the edge of the same, whereby when the spring is manually depressed below the latch-plate 9 it exerts springpressure on the leaf 26, thus yieldably but with sufiicient force holding the paper and negative immovable in the printing-frame. A spring 41 actuatesthe latchplate so that its edge adjacent the spring 12 is norniallv in the path of the latter when depressed for closing the printingframe. An inclined guard 47 receives the latch 12 when the latter is depressed, enabling the latter to move the plate around the pivot 10 of the plate, thus permitting the latch to pass. Vhen passed, the spring 41 returns the latch-plate 9 into locking position. Retaining-screws 62, 63 in arenate slots of the latch-plate, retain and guide the same on the rail of the printing'frame, while permitting it to swing for latching and unlatching. On a suitable pivot 43 at the inside of the standard 29, adjacent the latch-plate 9, is a rotary catch 42, having a tooth 52, projecting into the path of a fingel-.64 of the latch-plate 9, and having a lug 50 bearing against a stop 51 on the standard. A spring 25 tends to rotate the catch in the direction of the arrow 15 in Fig. 5.

\Vhen the printing-frame, after printing, is returning to discharging position, the fingerfii bears against the convex back of the tooth 52 and is moved by the same outwardly, thereby swinging the latch-plate 9 on its pivot and withdrawing the latch-plate out of the path of latch 12. The latch 12 thus being released, the springs of the back 26, 27, open the frame, as before described. Such release takes place a short distance before the arrival of the frame 7 in discharging position. The further movement of the -.frame brings the finger G t beyond the tooth 52, and spring t4 returns the latch-plate into normal position, shown in Fig. 5. The finger (34 being'now below tooth 52, remains in that position, and returns thereto'when for closing the printingframe the latch 12 is depressed and the plate moved as described heretofore.

The catch 42 being pivoted eccentrically to the printingframe, it follows that when, after the frame is filled, itis moved in direction of the arrow 77 in Fig. 2 toward print ing position, the finger 64: engages tooth 52 and carries the same along for a short distance, rotating the catch 42, against the tension of spring 25. The paths of the finger and of the tooth gradually diverge, and finally become separated to such an extent that the finger 64 releases the tooth, after having moved only a small part of a complete rotation. The catch 42 is returned by spring 25, into position with its lug arrested against the stop-pin 51,thus placing the catch in position for again tripping the latch when the frame is returned from printing position to discharging position;-

For operating the frame from discharging position to printing position by the foot of the operator, the-frame 7 is provided adjacent the standard 30 with an arcuate block 65 at one end of which is fastened a chain 8 or other suitable flexible connecting means, which descends through an opening in the base to a foot-treadle 78 secured to the fioor or any suitable point of support. \Vhen the treadle is depressed, the chain is lowered, swinging the frame against the tension of its spring 72 in the direction shown by arrow 77 in Fig. 2. from charging position into print ing position, where it may be held by the foot of the operator on the treadle, as long as may be desired. In thi case, the springpawl 20 is not required to be used, and is held out of operation by means of a hook 19 on the standard 30, which is hooked over the handle 18, thus retaining the pawl out of 1 operation.

The freedom of movement of the printingframe, the automatic control of the lamps, and the automatic opening of the frame after printing, together with the automatic return of the frame from printing to dis- :charging position when released by withdrawing pawl 20, enable the rapid production of prints of high quality. The freedom of movement of the printing lamp to any desired position, also its location above the frame, and the freedom of the apparatus from any obstruction between the lamp or pass the hand between the lamp and the frame, during printing, for retarding portions of the print, with the same freedom as with ordinary unmounted printing frames, thus enabling this important method of working in the art to be utilized to its full extent.

'It is obvious that the invention i not limited to the precise construction shown and described herein, but changes may be made therein without departing from the spirit of the invention as set forth in the claims.

I claim:

l. A photographic printing frame, oomprising an osci latory frame, and means automatically operative toopen the frame when the latter arrives in a predetermined position.

2. A photographic printing apparatus, comprising an oscillatory frame, automatic means for opening the sameafter printing, and means for oscillating the frame into engagement with said opening means.

3. A photographic printing apparatus, comprising an oscillatory frame, a latch and latch-plate normally retaining the same closed, and acatch in the path of the latchplate, adapted to release the same from the latch at a predetermined point in the oscilla tion of the frame. y

4. A photographic printing apparatus, comprising an oscillatory"-frame, and a source of light at printing d'ist-ance therefrom, controlled by the oscillation'of the frame, there being a free and unobstructed space for hand-retarding of the exposure, between said frame and said source of light.

5. A photographic printing apparatus, comprising an oscillatory frame spring-actuated toward open position, and means f r arresting the same in printing position against the tension of its spring.

(3. A photographic printing apparatus, comprising an oscillatory frame spring-actu ated toward discharging position, means for limiting the movement of the same when arrived in discharging position, and means for retarding the movement of the frame when approaching discharging position.

7. A photographic printing frame, comprising an oscillatory frame, having a back hinged transversely to the axis of the frame and opening toward one end of the same, means at the opposite end of the frame for retaining the back closed, and means for releasing said retaining means at a predetermined point in the rotation of the frame.

8. A photographic printing frame, comprising an oscillatory frame, having a back hinged transversely to the axis of the frame and opening toward one end of the same,

and the frame, permits the operator to hold mining the frame in printing springs norma l ly openingsgid back, means at the opposite end of; the mine fof'rtain ing the back closed, egninst the tension "of said s n'ings, and means foi' zi gntorna'tieglly releasing said retaining means.

, 1 V 4.- 9. A photographic pr nting frame, com,

prising an oscillatory frame spring-aetu lted fyom printing position toward dish zirg 'ilig position, end ma nu a l ly opeiahleinieensfe osition. A p ewe ie b Prim xmei mpr n i 0861. alt ry iteme'xi eflfi B1111 iting the moveinent hf' the'ifr nie' in 0X 9 q 'tiqn a m angle'wiwa d the. ss j efif light, and mean fo lim ti h l bvm nt of the frame in the (it-her'c liieet'iqiitit l different engle to th e sou rceof light.

"1 A Phtefififi li ii i ite s 99m. 13 k fi e ee Eate y t me .ie "x i ti g ea-min mated e ebs w te y there. ne i one diiec'tion, a ruby lamp 's'p'a'ce'd thel efr o n another dinc tion an d means 'for s i efiin'g" h, 7.f a x'. e. bhif t lamps.

2'- A" hqtb t b fp iiit ef ii m.- ti ing le e llatex 'itlelfi e; fi i l ing lamp spgcegl thei efgom, a i'nhy lamp' sp 'acd he ets ixfi; nd e fie se w rng i n t 'qmpg a la p an ep 'r' bl rbi' said in itstrot a tionj I 13; A" photographic printing fz -a me comprising s tgntla fds spaced "51 "int, a printing fz a'me' supported oniits lcfim'itndinsil aids between the"sta'ndards and s' fi'ring-aetueted tQFittd disch al ging position, {1 back hinged to open over" one stenQni'd, and gt rest on sni c l stand ard ntlapted to support said back yv hen'the fif'itn'le' is i n diseharging"position. "I4; A photographic printing frame comp r i s ing stend a rds spnc ed a p a l tsa printing frame snpp oi ted on its lol gi tnolinhl" axis between the standards and 'spi'ing-aetuated ftiwarglid is'eh'a rging position, a hack hinged t 'ifz fisit eif sely to the of the fialhent one etude P PFiI g W d /Qi r qp nm t w s e e ojnfone of sa d s n nd ards gt the opposite and of the frame,"tfiIateh-plate pivoted to b i d w ne q .ihvr' d. y d ciagtch herfap' n-oachi g ii 'seh a i gi ng position', and to ope a te said eat c h for pass ng the same when moving in the'oppositefiirec tion, a ngi e l atoh on said b;ack engtiging' the latch fpl gt'e and adapted to he elez'i'sied when the passes "dizef the Cite-h during the "15: K'photo raphic printing frame como se'ifiator'y ffixfm, fliexihl'eimot ion trens fnittin g means attzielied thereto fof 0soilliitingithefsnrf e, 2'1 foottreodIe attached to said in otion 't fa nsniitting means, a'nii l onie s of tl is pate nt n ay be obtaine d for five cents each, by'addressing the Commissioner of Patents, 

